Design of VANET for Improvement of QoS with Different Mobility Patterns

Prabhakar D. Dorge Sanjay S. Dorle Research Scholar, GHRCE Professor & HoD Nagpur, India Dept. Of Electronics, GHRCE prabhakar_dorge2007@rediffmail.com Nagpur, India

s_dorle@yahoo.co.uk

Abstract – VANETs (Vehicular ad-hoc network) are characterized by a very dynamic topology with partial infrastructure support, patterned mobility, and mobile nodes with sufficient amount of resources, intermittent connectivity and varied channel behavior. For this purpose, we always use the location information that vehicles share among them through repetitive messages that are transmitted in the VANET system. In addition to communication among the vehicles, VANET interface with communication access points provided by on road infrastructure. Thus in this paper we propose that the design of city environment VANET network with Wimax by using two key strategies which are multiple input & multiple output technology (MIMO) and adaptive modulation coding (AMC) which by combining gives the significantly enhanced data rate & maximum throughput with high efficiency in wireless network.

Keywords- VANET, MIMO, AMC, Wimax, Routing protocol

I. INTRODUCTION Vehicular ad-hoc networks (VANETs) enable promising new possibilities to enhance traffic safety and efficiency. The idea of VANETs is that vehicles communicate spontaneously in an ad-hoc manner over a wireless medium. General definition of Vehicular Ad hoc network (VANET) is Network for communication of passengers present in different vehicles. It gives many applications like safety application, traffic management application over wireless network [1, 2]. Hence it is called as vehicular ad hoc network communication. Vehicular ad hoc network is an infrastructure-aided network. The vision of VANET is that vehicles communicate spontaneously, in an ad-hoc manner over wireless network. Road side units are placed at certain amount of fixed distance on the road, similar to that of an access point in regular wireless networks. Infrastructure less network is a network which is formed dynamically through the cooperation of arbitrary set of wireless nodes. Each node is independently free to take decision based on the network requirement. Many researcher have done work on the VANET in Wi-Fi i.e. on 802.11 but we are going to implement the VANET in Wimax (Worldwide interoperability in microwave access) i.e. using 802.16e [3, 4]. Figure 1 shows the infrastructure of VANET which include the three types of communication i.e. communication of vehicles with base station, communication of base station with vehicles and communication between vehicles. All the vehicles having different mobility pattern i.e. all vehicles with different speeds.

Fig. 1. VANET infrastructure

For designing our network we are going to use the two key strategies that are MIMO (Multiple Input and Multiple Output technique) and AMC (Adaptive Modulation and Coding). In radio, MIMO system uses the multiple antennas at both the sides i.e. transmitter and receiver to improve communication performance parameters. It is different type of smart antenna technology. In MIMO system multiple terms shows the number of radio channels. Now a day in wireless communication MIMO plays an important role to increase the speed of the network. MIMO technology provides increases in data throughput and link range without additional bandwidth or increased transmit power. MIMO technique also supports to combine the different packets which come from different paths [5]. Wimax uses the adaptive modulation and coding technique for improvement of the communication network parameters. System always checks the SNR value of the link and according to the channel condition it uses the modulation technique for that particular link. If the SNR value of the link is high then it uses modulation technique like 32 QAM or 64 QAM. If the SNR value of the link is small then it uses BPSK or QPSK [6].

II. SIMULATION MODEL

In this work we are going to use different protocol for city environments network with different mobility patters also after designing this network we are going to analyze the result of all the protocol. The coverage area of our network will be about 10 Km with one base station and 100 vehicles of different speed. The network will be as same as city

2013 Sixth International Conference on Emerging Trends in Engineering and Technology

978-1-4799-2560-5/13 $31.00 © 2013 IEEE

DOI 10.1109/ICETET.2013.19

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2013 Sixth International Conference on Emerging Trends in Engineering and Technology

978-1-4799-2561-2/13 $31.00 © 2013 IEEE

DOI 10.1109/ICETET.2013.19

80

2013 6th International Conference on Emerging Trends in Engineering and Technology

978-1-4799-2561-2/13 $31.00 © 2013 IEEE

DOI 10.1109/ICETET.2013.19

80

environment network having two or three lanes. The speeds of the vehicle are varying from time to time. The parameters of the network are shown in the table 1. We are going to design this network by using NS2 software. The quality of service parameters are throughput, delay, jitter, packet delivery ratio and packet loss ratio.

TABLE 1: SIMULATION PARAMETERS

Parameters Quantity

No. of vehicles 100

Transmission range 10KM

Speed (kmph) 10,20,30,40,50,60

Packet size 1000 Byte

Routing protocol AODV,AOMDV,DSDV,DSR

Traffic Type UDP/CBR

MAC 802.16e

II. EXPECTED RESULTS

Fig. 2. Snapshot of the network using AODV routing protocol

Fig. 3. Snapshot of the network using DSDV routing protocol

A. To increase Packet delivery ratio with minimum delay As packet will send from base station to vehicles, vehicles to base station & vehicles to vehicles so there will be the chance of packet loss. But our aim is to design a network in such a way so that we will get maximum packet delivery ratio & minimum packet loss.

B. To improve the Quality of Services (QoS) In this work, we are going to used MIMO & AMC technique

in Wimax network for different routing protocol with different mobility patterns of vehicles. The expected QoS of services of the network should be maximum throughput in mbps with minimum jitter & minimum delay.

IV. CONCLUSION

In this work actual vehicular simulation model for city environment has been mentioned. More number of vehicle can involves to get high quality of service with improve in driving efficiency for secure communication also for many applications such as road safety, traffic control etc. Also in future there is an ample scope for designing different environment network to check its performance with existing VANET network.

REFERENCES [1] G .Vijayalakshmy , G. Sivaradje “A QoS guaranteed Tight coupled WiMAX-3G-WLAN Convergence using IMS signaling analysis” INTERNATIONA CONFERENCE ON COMPUTER COMMUNICATION AND INFORMATICS (ICCCI -2013), JAN. 04 – 6, 2013, COIMBATORE, INDIA.[2] Fernando Terroso-Sáenz, Mercedes Valdés-Vela, Cristina Sotomayor-Martínez, Rafael Toledo-Moreo,and Antonio F. Gómez-Skarmeta “A Cooperative Approach to Traffic Congestion Detection With Complex Event Processing and VANET”, IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS, VOL. 13, NO. 2, JUNE 2012. [3] Kalpalatha Sankarasubramaniam, Srikanth Subramanian “A Performance Study of Uplink Scheduling in Wimax Network” ICRTIT-2012. [4] Zhenyu Chen, Lin Guan ,Xingang Wang, Xunli Fan “Ad hoc On-demand Multipath Distance Vector routing with Backup Route Update Mechanism” IEEE 14TH INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE COMPUTING AND COMMUNICATIONS 2012.[5] Prabhakar D. Dorge, Sanjay S. Dorle, Megha B. Chakole and Dhiraj K. Thote , “Improvement of QoS in VANET with Different Mobility Patterns” Proceedings of the International Conference on Radar, Communication and Computing (ICRCC 2012), SKP Engineering College, Tiruvannamalai, TN., India. 21 - 22 December, IEEE, 2012. [6] Amrita Bose Paul, Shantanu Konwar, Upola Gogoi, Sukumar Nandi, Santosh Biswas “E-AODV for Wireless Mesh Networks and its Performance Evaluation” INTERNATIONAL CONFERENCE ON BROADBAND AND WIRELESS COMPUTING, COMMUNICATION AND APPLICATIONS 2011.

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